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Technical
Section 9
Dimensions
Section 10
C120H circuit breakers B, C and
D curves Ratings 10 - 125A,
breaking capacity 15kA
Protection against
overloads and short
circuits
4
Applications
C120 MCBs provide high levels of current capacity, while maintaining a breaking
capacity of 15kA. Available with a wide range of add on earth leakage and control
accessories with B, C, and D type characteristics and 1 - 4 poles.
n
Protection of cables against overloads and short circuits in final distribution
n
Manual control and isolation
n
Earth leakage protection when combined with a Vigi to BS EN 61009
n
Remote tripping, indication, by adding auxiliaries common to the entire
C60/C120 range
B curve
n
Applications: Protection and control of circuits against overloads and short
circuits in applications with general load characteristics
n
Tripping characteristics: BS EN 60898 Type B. Magnetic setting
between 3 and 5 In
C curve
n
Applications: Protection and control of circuits against overloads and short
circuits in applications with moderate inrush currents
n
Tripping characteristics: BS EN 60898 Type C. Magnetic setting
between 5 and 10 In
D curve
n
Applications: Protection and control of circuits against overloads and short
circuits in applications with high inrush currents
n
Tripping characteristics: BS EN 60898 Type D. Magnetic setting
between 10 and 14 In
Technical data
Current rating:
10 - 125A
Maximum voltage rating Ue:
440Vac
Insulation voltage Ui:
500V
Impulse withstand
6kV
voltage Uimp:
Complies with:
BS EN 60898 and BS EN 60947-2
Service breaking capacity:
Ics = 50% Icu
Positive contact indication
Fast closing ensures simultaneous closing of poles
Electrical durability:
≤
63A: 10,000 cycles (O-C)
80 - 125A: 5,000 cycles (O-C)
Limitation class:
3
Mechanical durability:
20,000 cycles (O-C)
Connection:
Flexible cables: 1.5 - 35mm
2
Rigid cables: 1 - 50mm
2
Tightening torque: 3.5Nm
Terminals ensure:
Degree of protection IP2X
Clamping of wide cross section cables
Automatic guiding of cable into the correct
position
Markers:
4 marker clips next to the upstream terminal
Label holder on handle (2, 3 and 4 pole)
Degree of pollution:
3